Determining input impedance, assigning reflection coefficient, and matching load impedance are important transmission line problems those involve complex calculation steps because of complex connection architectures in transmission lines. Efficient understanding of such problems in undergraduate and graduate courses should be supported by rich visualization tools. The Smith chart is a convenient tool for transmission line calculations especially for wave propagation and maximum power theory that discusses impedance matching problems. In this context, we can say that Java is a widely used open source educational tool having strong computational environment for research and development aims. In this study, an open source transmission line impedance matching educational framework (TLIME) has been designed to teach efficiently wave propagation and maximum power theory that discusses the impedance matching problems. The success of developed educational framework has been measured by a questionnaire held in courses in the third and fourth years of the electrical and electronics engineering undergraduate program at Sakarya University of Applied Sciences, Turkey. The visual preparation of the problem solutions with rich graphical user interface and simulations of the mathematical representations has been evaluated to contribute to a better understanding of the wave propagation and impedance matching transmission line subjects. The functionality and simplicity of the developed framework scored by over 82% among course enrolled students. The rest of the paper is organized as follows. Section 2 explains transmission line impedance matching problem in the context of maximum power theory. Section 3 discusses transmission line planning and problem solving with Smith chart. Section 4 discusses explanation and usage of developed TLIME framework and last section discusses results.

中文翻译：

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一种开源传输线阻抗匹配教育框架的设计与实现

确定输入阻抗、分配反射系数和匹配负载阻抗是重要的传输线问题，由于传输线中的连接结构复杂，这些问题涉及复杂的计算步骤。在本科和研究生课程中对此类问题的有效理解应该得到丰富的可视化工具的支持。史密斯圆图是传输线计算的便捷工具，尤其适用于讨论阻抗匹配问题的波传播和最大功率理论。在这种情况下，我们可以说 Java 是一种广泛使用的开源教育工具，具有强大的计算环境，用于研究和开发目标。在这项研究中，一个开源传输线阻抗匹配教育框架 (TLIME) 旨在有效地教授讨论阻抗匹配问题的波传播和最大功率理论。已开发的教育框架的成功通过在土耳其萨卡里亚应用科学大学电气和电子工程本科课程的第三年和第四年的课程中进行的问卷调查来衡量。问题解决方案的可视化准备具有丰富的图形用户界面和数学表示的模拟，已被评估有助于更好地理解波传播和阻抗匹配传输线主题。所开发框架的功能性和简单性在课程注册学生中的得分超过 82%。本文的其余部分安排如下。第 2 节解释了最大功率理论背景下的传输线阻抗匹配问题。第 3 节讨论传输线规划和使用史密斯圆图解决问题。第 4 节讨论开发的 TLIME 框架的解释和使用，最后一节讨论结果。